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Burgess Hill, UK
GBP 300/day (Inside IR35)
Contract
Intuition IT Solutions Ltd
JS

Key Responsibilities: Design and develop Back End services using Java and Golang Build and maintain microservices-based architecture Develop RESTful APIs and integrate third-party services Work with databases (SQL/NoSQL) and ensure performance optimization Collaborate with cross-functional teams (DevOps, QA, Product) Write clean, scalable, and well-documented code Participate in code reviews and system design discussions Required Skills: Strong hands-on experience in Java (Spring Boot, Microservices) Working experience in Golang Experience with REST APIs , JSON, HTTP Knowledge of Docker &...  more ->

28/01/2026 11:46:32ASAP6 -12 months
http://www.toptechjobs.com/fWKhJ
London, UK
£130k + Comps
Permanent
Hunter Bond
JS

Client: Financial Services Firm Salary: £130,000 + Comps Location: Hybrid (London) Experience: Senior A global financial services organisation is growing a senior Java engineering team to support a strategic, business-critical technology platform. This is a hands-on, senior level role suited to experienced engineers who enjoy working on complex systems while helping shape technical direction and engineering standards. What we're looking for Strong Java Back End development experience (modern Java versions) Background building high-quality, scalable applications in complex environments...  more ->

27/01/2026 16:01:32
http://www.toptechjobs.com/fVzKu
London, UK
Excellent
Contract
Rothstein Recruitment Ltd
JS/MRL/WB/JAVACONTRACTORS

Java Engineer - Backend - Distributed Systems Excellent opportunity opens for talented Java Developers to join a Globally leading Financial Services entity , working on critical, new projects. Role overview We are hiring Back End Java engineers to work on large-scale, event-driven platforms processing high volumes of Real Time transactions and API traffic. The environment is fully reactive and non-blocking, built for throughput, resilience, and low latency. This is not traditional Spring MVC/CRUD development. The stack is based on reactive streams and distributed data stores. Key...  more ->

22/01/2026 10:50:26ASAP, will await notice12 months initial Duration
http://www.toptechjobs.com/fTugU
South Croydon, Surrey, UK
520.00 Daily - 521.00 Daily GBP
Contract
Experis
JS3059833590

Fullstack Developer Start Date: ASAP Role Duration: 1 year Location: remote with occasional travel to Croydon Inside IR35 - Umbrella only Active SC clearance required, eligible candidates will be considered Required Skills: Java Kafka Nice to Have Skills: Spring (Framework, Boot, Data) Postgres OpenSearch/ElasticSearch NodeJS Rest API Wiremock (API mocking) Suitable Candidates should submit CVs in the first i click apply for full job details more ->

25/01/2026 00:57:25
http://www.toptechjobs.com/fUxyh
London, UK
£450 - £550 per day + PAYE/UMB
Contract
Atrium Workforce Solutions UK Limited
JS-LRAPI

API Developer - London Atrium EMEA are looking for several API Developers to support the Development teams onsite with a client in London. 12+mths contract, 2 days onsite/3 days remote, PAYE/Umbrella options. - API Developer - Java, TDD, RESTful API design & build, OAS/YAML, GitLab, CI/CD Pipelines, Java Database-Hibernate/JPA, SonarQube, Veracode, Jira, Confluence Click Apply now or contact Lianne to be considered for the API Developer - london role more ->

22/01/2026 15:37:37ASAP12mths
http://www.toptechjobs.com/fTxxb
London, UK
430/Day
Contract
Hamilton Barnes
JSSGM

Mainframe Developer (6-Month Contract) - London (Hybrid) We are seeking an experienced Mainframe Developer to join a prestigious financial institution on a 6-month contract. The role will focus on developing and supporting CICS web services, ZOS Connect EE, and DB2 REST interfaces within a dynamic hybrid working environment. The ideal candidate will have strong experience with CICS web services, SOAP, WSDL, JSON, and RESTful APIs, and be comfortable working in an Agile/DevOps environment using modern toolsets. Key Responsibilities Design, develop, and maintain CICS web services and ZOS...  more ->

26/01/2026 14:44:33ASAP6 months
http://www.toptechjobs.com/fVZxp
London, UK
£55k - £65k per annum
Permanent
Triad Group Plc
JS-PR/010785

Salesforce Developer Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Up to £65k plus excellent company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality...  more ->

23/01/2026 06:08:21ASAP
http://www.toptechjobs.com/fUEv5
London, UK
£55k - £65k per annum
Permanent
Triad Group Plc
JS-PR/010785

Salesforce Developer Based at client locations, working remotely, or based in our Godalming or Milton Keynes offices. Up to £65k plus excellent company benefits. Due to the nature of this position, you must be willing and eligible to achieve a minimum of SC clearance. To be eligible, you must have been a resident in the UK for a minimum of 5 years and have the right to work in the UK. About Us Triad Group Plc is an award-winning digital, data, and solutions consultancy with over 35 years' experience primarily serving the UK public sector and central government. We deliver high-quality...  more ->

22/01/2026 09:40:57ASAP
http://www.toptechjobs.com/fTsso
City, London, UK
90k Annual GBP
Permanent
Client Server
JS3063256311

Backend Software Engineer/Developer (Java AWS Spring) London/WFH to £90k Are you a Back End focussed technologist who enjoys building systems from scratch? You could be progressing your career at a global, prime broker that is replacing the Legacy infrastructure used across capital markets with a new cloud-native clearing and custody system, designed for today's complex global markets click apply for full job details more ->

27/01/2026 09:33:39
http://www.toptechjobs.com/fVsIJ
City of London, UK
Permanent
Robert Walters
JS-17691

Full Stack Developer Location: London Role Type: Permanent Work Setup: Hybrid - 3 days a week Who We Are: Vanguard is one of the world's leading investment firms, dedicated to helping clients achieve lasting financial success. Established in 1975, its unique ownership structure-where funds own the company and investors own the funds-ensures all efforts are focused on client outcomes. Known for integrity, innovation, and low-cost investing, fosters an inclusive and collaborative culture that empowers employees to make a meaningful impact globally. What you'll do: Serve as technical lead on...  more ->

26/01/2026 14:48:02
http://www.toptechjobs.com/fVZx0
London, UK
£60k - £65k per annum
Permanent
Randstad Technologies
JS-PR-1484589

Role: UI developer Type: Permanent Location: London, UK We are a global digital-first technology services firm looking for a Senior UI Developer to join our high-performing team in London. You will be responsible for executing sophisticated visual designs and building complex web applications within an Agile environment. This role is perfect for someone who balances technical rigor with an impeccable eye for design "visual grammar." The Essentials Experience: 8+ years of professional Front End development. Tech Stack: Expert-level JavaScript (OOJS), TypeScript, ReactJS, NextJS, HTML5, and...  more ->

28/01/2026 16:20:28
http://www.toptechjobs.com/fWN9s
London, UK
Permanent
Axiom Software Solutions Ltd
JS

Position: DevSecOps Engineer(Microservices/Backend Developer) - SC Cleared Location: London, UK (Hybrid 2-3 days in a week to office) Duration: Full Time Job Description: Seeking a talented and experienced DevSecOps Engineer with strong Microservices and Backend Development expertise. The ideal candidate will have hands-on experience with Java, Spring Boot, cloud platforms, and DevOps principles, along with a solid understanding of secure software delivery practices. Key Responsibilities Design, develop, and maintain Back End services using Java, Spring Boot, and Microservices architecture....  more ->

22/01/2026 14:39:19
http://www.toptechjobs.com/fTxex
London, Hybrid, UK
Excellent comp
Permanent
Scope AT Limited
JSC++

Investment Banking - Low Latency C++ Developer - financial markets/Linux/Scripting/low latency/TCP/IP PURPOSE AND SUMMARY We are looking for a C++ developer to be part of the low latency development team. The team provides industry leading low-latency trading services for our clients, utilizing FPGA, C++ and Java technologies. The candidate will be focusing on the C++ components. The ideal candidate: Is motivated by working in a high performing team, Is flexible to change of work streams as business priorities change or problems arise, Likes to learn from others as well as improve and invent,...  more ->

26/01/2026 10:51:16ASAP
http://www.toptechjobs.com/e6Ron
London, UK
£55k - £75k per annum
Permanent
Vertus Partners
JS-JE/SK/2601

Java Engineer - AWS - Microservices - Retail Banking Our client, a London based Bank is currently looking to hire an experienced Java Microservices Engineer to work within their leading Retail Banking feature team. Candidates will be working on a multi-year programme of work to engineer customer-centric, high-performance digital solutions, playing a key role in the ongoing evolution and development of their core platform. The environment is built on a modern tech stack including Java on AWS and uses Terraform, with a strong focus on automation and unit testing. This is an excellent...  more ->

26/01/2026 15:42:221-4 Weeks
http://www.toptechjobs.com/fVbRO
London, UK
£650 - 700 per day
Contract
La Fosse Associates Limited
JS117463

Java/Kotlin Team Lead - London - 6 months - Circa £650pd - 3 days pw We are partnered with a tech client who are looking for a Lead Backend Engineer with strong experience in Java and/or Kotlin to take a key technical leadership role within a Back End-focused engineering team Technical Leadership & Influence Lead design discussions, technical deep dives, and knowledge-sharing initiatives Anticipate technical risks and proactively propose scalable, secure solutions Influence product and platform decisions through strong technical insight Hands-on Software Development Develop high-quality Back...  more ->

27/01/2026 16:04:50
http://www.toptechjobs.com/fVzKx
Surrey, UK
Contract
GCS
JS-396901JAVA

Java Platform Engineer - Cloud | Data Platforms | Financial Services Location: Hybrid/Remote Contract Start: ASAP We are seeking an experienced Java Platform Engineer with strong cloud, and data platform expertise to join a high-performing engineering team within a leading financial services organisation. You'll be working on complex, scalable, cloud-native platforms used across the business. Key Responsibilities Design, develop, and maintain scalable Java-based services using Java and Spring Boot.Build and implement API-driven architectures and distributed systems. Work closely with DevOps...  more ->

22/01/2026 21:58:22ASAP6 months
http://www.toptechjobs.com/fT5R2
City of London, UK
+ Bonus + Excellent Package
Permanent
McGregor Boyall
JS-BBBH168928

Exclusive Search - Leading Global Investment Bank Are you a high-performance Java engineer with FX experience? My client, a top-tier global financial institution, is expanding its E-Trading FX Strategy team and is seeking a Vice President - Electronic FX Strategist to help drive one of the bank's most strategic growth areas. This is a rare chance to work at the heart of a cutting-edge FX franchise, owning key components across pricing, market-making, algorithmic trading and ultra-low-latency systems that run globally. You'll join a high-impact team responsible for all quant and technology...  more ->

22/01/2026 16:19:1106/04/2026 or ASAP
http://www.toptechjobs.com/fTyTG
London, UK
Permanent
Interact Consulting Limited
JS3058379850

My client is re-engineering their cloud-based practice management platform and looking for a Java Engineer to help take it global. You'll work hands-on with Java, Spring Boot, Azure, and modern cloud-native tech, building scalable, mission-critical systems used by thousands every day. What you'll do Design and build cloud-native services with Java & Spring Tackle scale, performance, security, and re click apply for full job details more ->

28/01/2026 13:52:41
http://www.toptechjobs.com/fWMzY
South Croydon, Surrey, UK
500.00 Daily + Inside IR-35 GBP
Contract
Sanderson Recruitment
JS3058652907

Full-Stack Developer Start Date: ASAP Role Duration: 1 year £500/day inside IR-35 Location: Remote with occasional travel to Croydon We are seeking an experienced Backend Developer to join a key public sector programme focused on delivering secure, high-performance systems that support critical government services click apply for full job details more ->

25/01/2026 00:57:26
http://www.toptechjobs.com/fUxyo
London, UK
£65k - £100k per annum + bonus + benefits
Permanent
Vertus Partners
JS-PFO/FF/2701

Python Developer - Front Office - Cross-Asset - Investment Bank London - Hybrid We are recruiting for a talented Python/Object Orientated Programming Developer to join a Global Front Office team in a leading Investment Bank. This role works cross-asset and is part of a multi-year transformation project with a large focus on optimisation and latency. Strong communication skills are essential, as the role is deeply integrated with other teams and platforms and plays a key role in shaping end-to-end trading workflows. Requirements: - Strong OOP experience - ideally Python/agnostic experience -...  more ->

27/01/2026 11:54:11
http://www.toptechjobs.com/fVvHJ
1  2  3  4  5
Python Developer
Permanent
£100,000
London
Senior Data Engineer
Contract
£650pd Inside IR35
London
Product Manager
API
Circa 500 - 700/Day
London
Test Manager
Permanent
Up To £110k
London
Ruby on Rails Develope...
Med Tech
£350 - £425 per day
Remote